Enantioselective effects of metalaxyl on soil enzyme activity
文献类型: 外文期刊
第一作者: Yue, Heng
作者: Yue, Heng;Fang, Song;Zhang, Yizhi;Ning, Yang;Yu, Weisong;Kong, Fanyu;Qiu, Jun;Yue, Heng;Fang, Song;Zhang, Yizhi;Ning, Yang;Yu, Weisong;Kong, Fanyu;Qiu, Jun
作者机构:
关键词: Enantioselectivity;chirality;metalaxyl;urease;invertase;catalase;pesticides
期刊名称:CHIRALITY ( 影响因子:2.437; 五年影响因子:2.204 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The enantioselective effects of the chiral pesticide metalaxyl on soil enzyme activity were investigated. Incubation experiments were conducted to investigate the effects of metalaxyl enantiomers at different concentrations on the activities of urease, invertase, and catalase as well as the type of activity change (activation vs. inhibition) at different times during incubation. The results indicated that the effects of metalaxyl on the activity of soil enzymes were not only related to the concentration of the enantiomers and soil incubation time, but also to the chiral configuration, suggesting the effects were enantioselective. A pattern of inhibition-recovery-slight stimulation was observed in urease activity of the soil samples treated with metalaxyl enantiomers, but the effects of (-)-R-metalaxyl were stronger than those of (+)-S-metalaxyl at the same concentration. Invertase activity in soil samples treated with metalaxyl enantiomers initially sharply decreased before finally returning to the normal level, and the effects of (+)-S-metalaxyl were stronger than those of (-) -R-metalaxyl at the same concentration. Metalaxyl enantiomers influenced catalase activity in a pattern of slight stimulation-inhibition-recovery, and the effects of (-) -R-metalaxyl were stronger than those of (+)-S-metalaxyl at the same concentration.
分类号: O641
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